Well then, -- (IP) There is nothing that can be translated as "well then" in the Greek source.

you -- (WF) This is from the second-person, singular form of the verb but it is the object of the verb's action not the subject acting.

should have - The first word here, translated as "should have" isn't like any of our common verbs in English. It is a little like we use the word "must" but the subject is not the person who "must" do something. The sense is similar "it is necessary" or, in this case, "it is necessary for you." "You" is the object of this verb, however, not an indirect object as in the English version. It is in a tense, we usually translate as the past.

missing "really"  -- (MW) The untranslated word "really" either emphasizes the truth of something ("certainly," "really") or it simply continues an existing narrative. Here, it is used for emphasis, not to continue what Jesus was saying. This matches with the negatives Jesus uses in the previous verse (Matthew 25:26 ), which also have the sense of "really."

put  - The word translated as "put...on deposit" has a number of meanings revolving around "throw" as we do in English with both "throw" and "toss." When applied to money, it has to the specific meaning of "putting money on deposit." However, it is used before the mention of money, so what the readers would hear initially is "toss." This is a common word for Jesus to use humorously so one meaning here would be "dump." It is not the word normally translated as "put" or "place."

my -- "My" is the first-person possessive singular pronoun. This pronoun follows the noun so "of mine."

missing "the"  -- (MW) The untranslated word is the Greek definite article, which usually precedes a noun and, without a noun, takes the meaning of "the one." The Greek article is much closer to our demonstrative pronouns ("this," "that," "these," "those"). See this article for more.

money -- The word translated as "money" is very uncommon for Jesus. It means "money" in the sense we use the term "cash," referring to the actual metal "silver."

on deposit -- This finishes the concept of the verb.

with -- This word "with " comes from the dative case of the following word that requires the addition of a preposition in English. The most common is a "to" for the English indirect object. However, the translator can choose other prepositions: "with,"  "in,"   "of,"  "as," "by," "for," "at," or "on" depending on the context.

the -- The word translated as "the" is the Greek definite article, without a noun, it has the sense of "the one." The Greek article is much closer to our demonstrative pronouns ("this," "that," "these," "those") than the English "the." See this article for more. 

bankers,  - The word translated as "bankers" is a made-up word from the Greek word that now means "bank." Jesus only uses it here and the word itself is not used elsewhere in Greek. However, the source word, "bank" has the primary meaning of "table" or "counter." which originally meant "table" from the "tables" or "counters" of money-changers. However, it is not the Greek word used elsewhere in the NT translated as "money-changers." This word is used because it is a pun, since the word for "bank" also means the grinding surface of teeth and the lower millstone which grinds grain. So the sense here is the "grinders" or "bankers."

missing "and"  -- (MW) The untranslated word  "and" is used as the conjunction "and," but it also is used to add emphasis ("also").

 so that when I -- (IP) There is nothing that can be translated as "so that when I" in the Greek source.

returned - (WW, WF) The word translated as "returned" primarily means "to start out" but Jesus usually uses it to mean "come" but not always. Here it is an adjective "coming" modifying the "I" that follows. "Showing up" works here better.

I  - The pronoun "I" is used here. Since, as the subject of the sentence, it is part of the verb and is unnecessary. Its explicit use accentuates who is speaking "I" and Christ uses it usually for humorous effect. Here, it refers back to the earlier criticism made of the lord.

missing "myself" -- (MW)  The subjective pronoun repeats the information in the verb so it should be repeated in English like "I myself."

would -- -- There is a particle after the verb here that can be translated as "should," but "should" is usually indicated by a special verb form.

have -- (WT) This helping verb "have" indicates that the verb is the tense indicating an action completed in the past. This is not the tense of the verb here.

received  - (CW) Another uncommon verb is translated as "received" primarily means "to take care of" but it also means "to get back" which works in this context, but "recovered" says it more simply. It also means "to receive," but Jesus has another word he common uses for that idea.

it -- (CW) The "it"  is the Greek definite article, "the," which usually precedes a noun and her precedes the untranslated word meaning "my own."  The Greek article is much closer to our demonstrative pronouns ("this," "that," "these," "those"). See this article for more. 

back -- This finishes the idea of the verb.

missing "by/for myself"-- (WV) A phrase is necessary because the form of the previous verb is a middle voice, which means that the subject acts on "myself," "for myself" or "by myself."

missing "my own"  -- (MW) the missing "my own" is the first-person possessive singular pronoun. This pronoun follows the article so "that of mine."

with  - The word translated as "with" is also not from the word Christ uses to say "with." It is from a preposition that Christ rarely uses that means "along with" and, when referring to things "attached to" and "by means of." The last meaning makes sense here.

interest.  - The word translated as "usury" primarily means "childbirth" but specifically to the gestation period in the womb. You can see how the idea of bank interest arose from growth in the womb as a kind of slang. Money gives birth to more money. The word itself is a good summary of this verse.